Using Gas Shielded Flux Core welding, a butt joint can be analyzed for surface corrosion. The material used with both of these welding processes in this experiment is 1/4-inch A36 Hot Rolled Flat Bar, cut from a single piece, variations of the stock material are minimized. The material is chosen as it is one of the most prevalent material used in many industries that incorporate heavy steel usage. The flat bar measures 3-inch in width, 1/4-inch in thickness, and are cut into 2-inch test pieces. Two pieces form a single test subject, which are welded together. One set of the test pieces are applied with SiC (Silicon Carbide) before the welding process. Both sets are then welded with Gas Shielded Flux Core welding. The final dimension of the test piece is 1/4-inch x 4-inch x 3-inch. The welded pieces are then subjected to corrosion testing in a salt spray chamber and results are observed. The salt spray chamber is controlled at 1 bar pressure with 180L brine reservoir at 5% NaCl concentration. The temperature is held constant at 45 °C with a humidity of 50%. The test pieces will be subjected to this condition for 96 hours. A parallel corrosion test conducted using 1% HCl solution at ambient temperature, 35 °C, 45°C, and 55°C. The samples are initially weighed and placed in the HCl solution for 24 hours. Weight loss from thermal shock from quenching is also conducted. Subjects are heated to a temperature of 250, 300, 350, 400, 450, 500, 550°C and quenched for 15 minutes. The final weight is then taken. Microhardness testing is conducted on the weldments. The conclusion of the test reveals that with the incorporation of SiC powder into the welding process, it resulted in less corrosion (weight loss), less weight loss from thermal shock, and increased microhardness.